/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraTypes.h
Replaces the root namespace from the variable if it matches the expected namespace with the NewNamespace. i.e. Prev.VarName would become Next.VarName but Other.Prev.VarName would not be modified. For more complex namespace manipulation refer toFNiagaraUtilities::ResolveAliases
bool ReplaceRootNamespace ( const FStringView & ExpectedNamespace, const FStringView & NewNamespace )